I don't see this as an issue you need to level multiple class to even beable to do this.

Fact is you can't stop people who bot and you shouldn't punish those who don't bot, SE seem pretty care free about bots and RMT anyway so your thread will be falling on deaf ears.

It's worth mentioning that this would give no bonus XP and would only be useful for mass production of base materials and in that case hasty hand is probably a better choice anyway.